Good story, you need to revise it for spelling errors and add paragraphs of course.
About the blood smear, when blood dries its usualy black and clumped and more random, also I dont know I tusken blood is red or not, might want to research that.
But what you can do for blood splatter is tape up the visor and get a nice dried blood color and take a very dry paint brush and at a distance sort of fling it on the helmet, and then take some fresh blood color and not so much fling it on, You can practice it on cardboard first. but I think a blood splatter would look better than a swear.